I'll get that information for you tonight.What model of TV did you get the Toshiba A68KSA30X002 tube from ?
So to clarify,The picture of the 1st tube looks like a bonded yoke to me. To echo nem, its highly unlikely that a consumer tv yoke would measure out to meet ms9 spec or ms2931 spec yokes.
Consumer TVs (and their yokes) almost never were designed to drive 24Khz or 31Khz signals, thus are likely incompatible from electrical standpoint with those chassis.
This means you need the original yoke from the arcade monitor to swap onto the donor tube. In your case, if the tube fits the blast bezel, then you just need to find a ms2930/31/33 yoke to swap that arcade monitor yoke with the consumer tv yoke.
FWIW, 19" or A48xxx tubes usually can retain their yokes for the purpose of installing an arcade monitor chassis. Many 19" arcade chassis's (K7000s for instance) are typically made for low impedance 15Khz yokes and most 19" consumer tv yokes (from the mid 1990s onward at least) are within a similar spec and thus can be compatible without a yoke swap. I have never sourced a 27" or A68xxx tube from a consumer TV that is compatible with any dual res or tri-sync montior without a yoke swap.
Always best to use the rings from the TV set you sac'ed the tube from. The yoke on the other hand is another story.Also, does anyone have a set of purity rings and a ms2931 yoke they can spare?? I'd like to try to make this work for my badly burned Blast tubes. But I won't be mad if I can use this for an awesome ms9 chassis either
If it has a bonded yoke don't bother. It'll be a lot of work to remove it and it's a crapshoot as to whether you'll get a decent picture.So to clarify,
Can I tube swap this bonded yoke tube using an ms29 yoke? And make it work?
If I can remove the bonded yoke???
Obviously adding purity rings to it etc.
Or not possible to use a bonded yoke??
Bonded yoke will be a pain to remove and you would need to source convergence rings that fit the tube from the tv. No guarantee of the success of that.So to clarify,
Can I tube swap this bonded yoke tube using an ms29 yoke? And make it work?
If I can remove the bonded yoke???
Obviously adding purity rings to it etc.
Or not possible to use a bonded yoke??
I'll get that information for you tonight.
Here you go.Any luck finding that TV model? This Toshiba A68KSA30X tube has really got me curious.
It's a matter of trial and error when yoke swapping. Unscrew the consumer yoke and rings and they should just slide right off. Sometimes they're glued in place with some silicon, so you'll have to cut the glue to loosen it.This A68KSA30X12 tube looks like a perfect match physically to the A68KZN699X in the blast. I got spare and yoke and MS-2930 coming my way to try my hand at a swap.
Never gone as far as swapping the yoke on any CRT so thoughts and advice would be appreciated. Might be able to get a second tube.
Thank you, I will watch the video and see what I can figure. I wouldn't have guessed that I would reuse the rings on the tube already but that does make sense now that I think about it.It's a matter of trial and error when yoke swapping. Unscrew the consumer yoke and rings and they should just slide right off. Sometimes they're glued in place with some silicon, so you'll have to cut the glue to loosen it.
Slide the nanao yoke in place and reuse the consumer television convergence rings. Connect the yoke wires to your nanao chassis and turn it on to see if you get an image. If you get any picture that's a good sign. Chances are you'll need to adjust the yoke on the neck to correct any purity issues by sliding it back and forth until you hit the sweet spot. You might also need to adjust the convergence rings to correct purity issues as well, which can be a giant pain in the ass.
You can watch delusional arcades video on how he tube swapped a k-7000 to get a better idea.
View: https://www.youtube.com/watch?v=JjznOc5SHEY
If it has a bonded yoke don't bother. It'll be a lot of work to remove it and it's a crapshoot as to whether you'll get a decent picture.
I have had zero luck with tubes using bonded yokes, almost always have purity issues.
It does look like it has some adhesive where the clamp is. Loosen the clamp and try to twist the yoke, see what happens.
I learned purity rings = no bonded yoke.The service manual says this is a bonded yoke and the sixth symbol in the Toshiba type number suggests its bonded but the neck has sets of rings on it. Is this similar to the other bonded yokes you have tried?
I learned purity rings = no bonded yoke.